farcasclaudiu/SmartThreadPool
1
0
Fork 0
mirror of https://github.com/farcasclaudiu/SmartThreadPool.git synced 2026-06-22 09:01:19 +03:00
Code Issues Packages Projects Releases Wiki Activity
Files
4d6ffb5851682252a8ede1089eb90363480dc854
SmartThreadPool/STPTests/TestCancel.cs
T
Ami Bar 4d6ffb5851 v2.0 
SmartThreadPool v2.0
2009-12-19 16:32:41 +02:00

807 lines
25 KiB
C#
Raw Blame History

using System;
using System.Threading;
using NUnit.Framework;
using Amib.Threading;
namespace SmartThreadPoolTests
{
/// <summary>
/// Summary description for TestCancel.
/// </summary>
[TestFixture]
[Category("TestCancel")]
public class TestCancel
{
/// <summary>
/// 1. Create STP in suspended mode
/// 2. Queue work item into the STP
/// 3. Cancel the work item
/// 4. Work item's GetResult should throw WorkItemCancelException
/// </summary>
[Test]
[ExpectedException(typeof(WorkItemCancelException))]
public void CancelInQueueWorkItem()
{
STPStartInfo stpStartInfo = new STPStartInfo();
stpStartInfo.StartSuspended = true;
SmartThreadPool stp = new SmartThreadPool(stpStartInfo);
IWorkItemResult wir = stp.QueueWorkItem(delegate(object state) { return null; });
wir.Cancel();
Assert.IsTrue(wir.IsCanceled);
try
{
wir.GetResult();
}
finally
{
stp.Shutdown();
}
}
/// <summary>
/// 1. Create STP
/// 2. Queue work item that takes some time
/// 3. Wait for it to start
/// 4. Cancel the work item (soft)
/// 5. Work item's GetResult should throw WorkItemCancelException
/// </summary>
[Test]
[ExpectedException(typeof(WorkItemCancelException))]
public void CancelInProgressWorkItemSoft()
{
ManualResetEvent waitToStart = new ManualResetEvent(false);
SmartThreadPool stp = new SmartThreadPool();
IWorkItemResult wir = stp.QueueWorkItem(
delegate(object state) { waitToStart.Set(); Thread.Sleep(100); return null; }
);
waitToStart.WaitOne();
wir.Cancel(false);
Assert.IsTrue(wir.IsCanceled);
try
{
wir.GetResult();
}
finally
{
stp.Shutdown();
}
}
/// <summary>
/// 1. Create STP
/// 2. Queue work item that:
/// a. Sleep for 0.1 seconds
/// b. Increment the counter
/// 3. Wait for the work item to start
/// 4. Cancel the work item (abort)
/// 5. Make sure the work item result indicates the work item has been cancelled.
/// 6. Make sure the counter incrementation didn't happen
/// 7. Work item's GetResult should throw WorkItemCancelException
/// </summary>
[Test]
[ExpectedException(typeof(WorkItemCancelException))]
public void CancelInProgressWorkItemAbort()
{
ManualResetEvent waitToStart = new ManualResetEvent(false);
int counter = 0;
SmartThreadPool stp = new SmartThreadPool();
IWorkItemResult wir = stp.QueueWorkItem(
delegate(object state) { waitToStart.Set() ; Thread.Sleep(100); ++counter; return null; }
);
waitToStart.WaitOne();
wir.Cancel(true);
Assert.IsTrue(wir.IsCanceled);
Assert.AreEqual(counter, 0);
try
{
wir.GetResult();
}
finally
{
stp.Shutdown();
}
}
/// <summary>
/// 1. Create STP
/// 2. Queue work item that takes some time
/// 3. Wait for it to start
/// 4. Cancel the work item (soft)
/// 5. Make sure, in the work item, that SmartThreadPool.IsWorkItemCanceled is true
/// 5. Wait for the STP to get idle
/// 6. Work item's GetResult should throw WorkItemCancelException
/// </summary>
[Test]
public void CancelInProgressWorkItemSoftWithSample()
{
bool cancelled = false;
ManualResetEvent waitToStart = new ManualResetEvent(false);
ManualResetEvent waitToComplete = new ManualResetEvent(false);
SmartThreadPool stp = new SmartThreadPool();
IWorkItemResult wir = stp.QueueWorkItem(
delegate(object state) {
waitToStart.Set();
Thread.Sleep(100);
cancelled = SmartThreadPool.IsWorkItemCanceled;
waitToComplete.Set();
return null;
}
);
waitToStart.WaitOne();
wir.Cancel(false);
waitToComplete.WaitOne();
Assert.IsTrue(cancelled);
stp.Shutdown();
}
/// <summary>
/// 1. Create STP in suspended mode
/// 2. Queue work item into the STP
/// 3. Cancel the work item
/// 4. Start the STP
/// 5. Wait for the STP to get idle
/// 6. Work item's GetResult should throw WorkItemCancelException
/// 7. Cancel the work item again
/// 8. Work item's GetResult should throw WorkItemCancelException
/// </summary>
[Test]
[ExpectedException(typeof(WorkItemCancelException))]
public void CancelCanceledWorkItem()
{
STPStartInfo stpStartInfo = new STPStartInfo();
stpStartInfo.StartSuspended = true;
SmartThreadPool stp = new SmartThreadPool(stpStartInfo);
IWorkItemResult wir = stp.QueueWorkItem(delegate(object state) { return null; });
int counter = 0;
wir.Cancel();
try
{
wir.GetResult();
}
catch (WorkItemCancelException ce)
{
ce.GetHashCode();
++counter;
}
Assert.AreEqual(counter, 1);
wir.Cancel();
try
{
wir.GetResult();
}
finally
{
stp.Shutdown();
}
}
/// <summary>
/// 1. Create STP
/// 2. Queue work item into the STP
/// 3. Wait for the STP to get idle
/// 4. Work item's GetResult should return value
/// 4. Cancel the work item
/// 5. Work item's GetResult should return value
/// </summary>
[Test]
public void CancelCompletedWorkItem()
{
SmartThreadPool stp = new SmartThreadPool();
IWorkItemResult wir = stp.QueueWorkItem(
delegate(object state) { return 1; }
);
stp.WaitForIdle();
Assert.AreEqual(wir.GetResult(), 1);
wir.Cancel();
Assert.AreEqual(wir.GetResult(), 1);
stp.Shutdown();
}
/// <summary>
/// 1. Zero counter
/// 2. Create STP
/// 3. Queue 10 work items, that sleep and then increment the counter, into the STP
/// 4. Cancel the STP
/// 5. Make sure the counter is still zero
/// </summary>
[Test]
public void CancelSTPWorkItems()
{
// I don't use lock on the counter, since any number above 0 is a failure.
// In the worst case counter will be equal to 1 which is still not 0.
int counter = 0;
SmartThreadPool stp = new SmartThreadPool();
for (int i = 0; i < 10; i++)
{
stp.QueueWorkItem(
delegate(object state) { Thread.Sleep(500); ++counter; return null; }
);
}
Thread.Sleep(100);
stp.Cancel(true);
Assert.AreEqual(counter, 0);
stp.Shutdown();
}
/// <summary>
/// 1. Zero counter
/// 2. Create STP
/// 3. Create a WIG
/// 4. Queue 10 work items, that sleep and then increment the counter, into the WIG
/// 5. Cancel the WIG
/// 6. Wait for the WIG to become idle
/// 7. Make sure the counter is still zero
/// </summary>
[Test]
public void CancelWIGWorkItems()
{
// I don't use lock on the counter, since any number above 0 is a failure.
// In the worst case counter will be equal to 1 which is still not 0.
int counter = 0;
SmartThreadPool stp = new SmartThreadPool();
IWorkItemsGroup wig = stp.CreateWorkItemsGroup(10);
for (int i = 0; i < 10; i++)
{
wig.QueueWorkItem(
delegate(object state) { Thread.Sleep(500); ++counter; return null; }
);
}
Thread.Sleep(100);
wig.Cancel(true);
Assert.AreEqual(counter, 0);
stp.Shutdown();
}
/// <summary>
/// 1. Zero global counter
/// 2. Create STP
/// 3. Create a WIG1 in suspended mode
/// 4. Create a WIG2 in suspended mode
/// 5. Queue 5 work items, that increment the global counter, into the WIG1
/// 6. Queue 7 work items, that increment the global counter, into the WIG2
/// 7. Cancel the WIG1
/// 8. Start the WIG1
/// 9. Start the WIG2
/// 10. Wait for the STP to get idle
/// 11. Make sure the global counter is 7
/// </summary>
[Test]
public void Cancel1WIGof2WorkItems()
{
int counter1 = 0;
int counter2 = 0;
SmartThreadPool stp = new SmartThreadPool();
IWorkItemsGroup wig1 = stp.CreateWorkItemsGroup(3);
IWorkItemsGroup wig2 = stp.CreateWorkItemsGroup(3);
for (int i = 0; i < 3; i++)
{
wig1.QueueWorkItem(
delegate(object state) { Interlocked.Increment(ref counter1); Thread.Sleep(500); Interlocked.Increment(ref counter1); return null; }
);
}
for (int i = 0; i < 3; i++)
{
wig2.QueueWorkItem(
delegate(object state) { Thread.Sleep(500); Interlocked.Increment(ref counter2); return null; }
);
}
while (counter1 < 3)
{
Thread.Sleep(1);
}
wig1.Cancel(true);
stp.WaitForIdle();
Assert.AreEqual(3, counter1, "Cancelled WIG1");
Assert.AreEqual(3, counter2, "Normal WIG2");
stp.Shutdown();
}
//////////////////////////////////////////////////////////////////////////////////////////////////
/*
private int _counter;
/// <summary>
/// Example of how to queue a work item and then cancel it while it is in the queue.
/// </summary>
[Test]
[ExpectedException(typeof(WorkItemCancelException))]
public void WorkItemCanceling()
{
// Create a SmartThreadPool with only one thread.
// It just to show how to use the work item canceling feature
SmartThreadPool smartThreadPool = new SmartThreadPool(10*1000, 1);
// Queue a work item that will occupy the thread in the pool
IWorkItemResult wir1 =
smartThreadPool.QueueWorkItem(new WorkItemCallback(this.DoSomeWork), null);
// Queue another work item that will wait for the first to complete
IWorkItemResult wir2 =
smartThreadPool.QueueWorkItem(new WorkItemCallback(this.DoSomeWork), null);
// Wait a while for the thread pool to start executing the first work item
Thread.Sleep(100);
try
{
// The first work item cannot be canceled since it is currently executing
if (!wir1.Cancel())
{
// Cancel the second work item while it still in the queue
if (wir2.Cancel())
{
// Retreiving result of a canceled work item throws WorkItemCancelException exception
wir2.GetResult();
}
}
}
finally
{
smartThreadPool.Shutdown();
}
}
/// <summary>
/// </summary>
[Test]
public void WorkItemCancelingAndInUseWorkerThreads()
{
SmartThreadPool smartThreadPool = new SmartThreadPool(10*1000, 10);
IWorkItemResult [] wirs = new IWorkItemResult[100];
for(int i = 0; i < 100; ++i)
{
wirs[i] = smartThreadPool.QueueWorkItem(new WorkItemCallback(this.DoSomeWork), null);
}
// Wait a while for the thread pool to start executing the first work item
Thread.Sleep(100);
for(int i = 0; i < 100; ++i)
{
wirs[i].Cancel();
}
smartThreadPool.WaitForIdle(2000);
int inUseThreads = smartThreadPool.InUseThreads;
smartThreadPool.Shutdown();
Assert.AreEqual(0, inUseThreads);
}
private object DoSomeWork(object state)
{
Thread.Sleep(1000);
return 1;
}
/// <summary>
/// Check within the work item if it was cancelled
/// </summary>
[Test]
public void SampleIfWorkItemCancelled()
{
_counter = 0;
STPStartInfo stpStartInfo = new STPStartInfo();
stpStartInfo.StartSuspended = true;
// Create a SmartThreadPool with only one thread.
SmartThreadPool smartThreadPool = new SmartThreadPool(stpStartInfo);
IWorkItemResult[] wirs = new IWorkItemResult[100];
for (int i = 0; i < 100; ++i)
{
wirs[i] = smartThreadPool.QueueWorkItem(new WorkItemCallback(this.DoCheckForCancelledWorkItem), null);
}
for (int i = 0; i < 50; ++i)
{
wirs[i].Cancel();
}
smartThreadPool.Start();
smartThreadPool.WaitForIdle();
smartThreadPool.Shutdown();
Assert.AreEqual(50, _counter);
}
/// <summary>
/// 1. Create STP
/// 2. Queue work item into the STP
/// 4. Cancel the work item
/// 5. Work item doesn't check for cancel
/// 6. Work item quits
/// 7. Make sure the work item result is ok, and not an exception
/// </summary>
[Test]
public void TestWorkItemCancelledWorkItemOK()
{
// Create a SmartThreadPool with only one thread.
SmartThreadPool smartThreadPool = new SmartThreadPool();
AutoResetEvent start = new AutoResetEvent(false);
// Queue the work item
IWorkItemResult wir = smartThreadPool.QueueWorkItem(new WorkItemCallback(this.DoWaitForCancel), start);
// Wait for it to start executing
bool success = start.WaitOne(3000, false);
// Make sure it was started
Assert.IsTrue(success);
// Cancel the work item
wir.Cancel();
// Let it complete
start.Set();
// Wait for the work item to complete
smartThreadPool.WaitForIdle();
// Check the work item's result
// The work item started running after it was start its execution.
// Since the work item didn't sample the cancel, it was not aware that it
// was canceled. Therefore the result should be what the work item returned
// and not the cancel exeception
int result = (int)wir.GetResult(0, false);
smartThreadPool.Shutdown();
Assert.AreEqual(1, result);
}
/// <summary>
/// 1. Create STP
/// 2. Create WIG
/// 3. Queue work item into the WIG
/// 4. Cancel the work items in the WIG
/// 5. Work item doesn't check for cancel
/// 6. Work item quits
/// 7. Make sure the work item result is ok, and not an exception
/// </summary>
[Test]
public void TestWIGCancelledWorkItemOK()
{
// Create a SmartThreadPool with only one thread.
SmartThreadPool smartThreadPool = new SmartThreadPool();
IWorkItemsGroup wig = smartThreadPool.CreateWorkItemsGroup(1);
AutoResetEvent start = new AutoResetEvent(false);
// Queue the work item
IWorkItemResult wir = wig.QueueWorkItem(new WorkItemCallback(this.DoWaitForCancel), start);
// Wait for it to start executing
bool success = start.WaitOne(3000, false);
// Make sure it was started
Assert.IsTrue(success);
// Cancel the work item
wig.Cancel();
// Let it complete
start.Set();
// Wait for the work item to complete
smartThreadPool.WaitForIdle();
// Check the work item's result
// The work item started running after it was start its execution.
// Since the work item didn't sample the cancel, it was not aware that it
// was canceled. Therefore the result should be what the work item returned
// and not the cancel exeception
int result = (int)wir.GetResult(0, false);
smartThreadPool.Shutdown();
Assert.AreEqual(1, result);
}
/// <summary>
/// 1. Create STP
/// 2. Queue work item into the STP
/// 3. Cancel the work items in the STP
/// 4. Work item doesn't check for cancel
/// 5. Work item quits
/// 6. Make sure the work item result is ok, and not an exception
/// </summary>
[Test]
public void TestSTPCancelledWorkItemOK()
{
// Create a SmartThreadPool with only one thread.
SmartThreadPool smartThreadPool = new SmartThreadPool();
AutoResetEvent start = new AutoResetEvent(false);
// Queue the work item
IWorkItemResult wir = smartThreadPool.QueueWorkItem(new WorkItemCallback(this.DoWaitForCancel), start);
// Wait for it to start executing
bool success = start.WaitOne(3000, false);
// Make sure it was started
Assert.IsTrue(success);
// Cancel the work item
smartThreadPool.Cancel();
// Let it complete
start.Set();
// Wait for the work item to complete
smartThreadPool.WaitForIdle();
// Check the work item's result
// The work item started running after it was start its execution.
// Since the work item didn't sample the cancel, it was not aware that it
// was canceled. Therefore the result should be what the work item returned
// and not the cancel exeception
int result = (int)wir.GetResult(0, false);
smartThreadPool.Shutdown();
Assert.AreEqual(1, result);
}
/// <summary>
/// 1. Create STP
/// 2. Queue work item
/// 3. Cancel the work item
/// 4. Work item checks the cancel and quits
/// 5. Make sure the work item result throws exception
/// </summary>
[Test]
[ExpectedException(typeof(WorkItemCancelException))]
public void TestWorkItemCanceledWorkItemCancelException()
{
// Create a SmartThreadPool with only one thread.
SmartThreadPool smartThreadPool = new SmartThreadPool();
AutoResetEvent start = new AutoResetEvent(false);
// Queue the work item
IWorkItemResult wir = smartThreadPool.QueueWorkItem(new WorkItemCallback(this.DoCheckForCancel), start);
// Wait for it to start executing
bool success = start.WaitOne(3000, false);
// Make sure it was started
Assert.IsTrue(success);
// Cancel the work item
wir.Cancel();
// Let it complete
start.Set();
// Wait for the work item to complete
smartThreadPool.WaitForIdle();
try
{
// Check the work item's result
// The work item started running after it was start its execution.
// The work item samples the cancel, therefore it is aware that it
// was canceled. Using the GetResult should throw the cancel exeception
wir.GetResult(0, false);
}
finally
{
smartThreadPool.Shutdown();
}
}
/// <summary>
/// 1. Create STP
/// 2. Create WIG
/// 3. Queue work item into the WIG
/// 4. Cancel the work items in the WIG
/// 5. Work item checks the cancel and quits
/// 6. Make sure the work item result throws exception
/// </summary>
[Test]
[ExpectedException(typeof(WorkItemCancelException))]
public void TestWIGCancelledWorkItemCancelException()
{
// Create a SmartThreadPool with only one thread.
SmartThreadPool smartThreadPool = new SmartThreadPool();
IWorkItemsGroup wig = smartThreadPool.CreateWorkItemsGroup(1);
AutoResetEvent start = new AutoResetEvent(false);
// Queue the work item
IWorkItemResult wir = wig.QueueWorkItem(new WorkItemCallback(this.DoCheckForCancel), start);
// Wait for it to start executing
bool success = start.WaitOne(3000, false);
// Make sure it was started
Assert.IsTrue(success);
// Cancel the work item
wig.Cancel();
// Let it complete
start.Set();
// Wait for the work item to complete
smartThreadPool.WaitForIdle();
try
{
// Check the work item's result
// The work item started running after it was start its execution.
// The work item samples the cancel, therefore it is aware that it
// was canceled. Using the GetResult should throw the cancel exeception
wir.GetResult(0, false);
}
finally
{
smartThreadPool.Shutdown();
}
}
/// <summary>
/// 1. Create STP
/// 3. Queue work item into the STP
/// 4. Cancel the work items in the STP
/// 5. Work item checks the cancel and quits
/// 6. Make sure the work item result throws exception
/// </summary>
[Test]
[ExpectedException(typeof(WorkItemCancelException))]
public void TestSTPCancelledWorkItemCancelException()
{
// Create a SmartThreadPool with only one thread.
SmartThreadPool smartThreadPool = new SmartThreadPool();
AutoResetEvent start = new AutoResetEvent(false);
// Queue the work item
IWorkItemResult wir = smartThreadPool.QueueWorkItem(new WorkItemCallback(this.DoCheckForCancel), start);
// Wait for it to start executing
bool success = start.WaitOne(3000, false);
// Make sure it was started
Assert.IsTrue(success);
// Cancel the work item
smartThreadPool.Cancel();
// Let it complete
start.Set();
// Wait for the work item to complete
smartThreadPool.WaitForIdle();
try
{
// Check the work item's result
// The work item started running after it was start its execution.
// The work item samples the cancel, therefore it is aware that it
// was canceled. Using the GetResult should throw the cancel exeception
wir.GetResult(0, false);
}
finally
{
smartThreadPool.Shutdown();
}
}
private object DoCheckForCancelledWorkItem(object state)
{
if (!SmartThreadPool.IsWorkItemCanceled)
{
Interlocked.Increment(ref _counter);
}
return null;
}
private object DoWaitForCancel(object state)
{
AutoResetEvent start = state as AutoResetEvent;
// Signal the test that the work item started
start.Set();
// Let the test run (or else the next line may reset the signaled event)
Thread.Sleep(10);
// Wait for the test to cancel the work item
start.WaitOne();
return 1;
}
private object DoCheckForCancel(object state)
{
AutoResetEvent start = state as AutoResetEvent;
// Signal the test that the work item started
start.Set();
// Let the test run (or else the next line may reset the signaled event)
Thread.Sleep(10);
// Wait for the test to cancel the work item
start.WaitOne();
// Sample if the work item was cancelled
bool cancelled = SmartThreadPool.IsWorkItemCanceled;
return 1;
}
*/
}
}
Reference in New Issue View Git Blame Copy Permalink